Added functionality for axonometric views in orthogrpahic projection tool
Fix to axonometric projection for objects not centred at y = 0
Fixed overwriting of axo view when ortho views changed.
Correctly enables/disables axonometric tab when axonometric view added/removed.
Correctly identify standard template files
Added manual scaling to axonometric view
Part Dimension: alterations to existing files

    Not sure what is happening with View3dInventorViewer.h.
    The only REAL change, beyond the addition of dim functions, is
    the removal of the member arrowrotation. It wasn't referenced anywhere.
Part Dimension: new implementation files
Part Dimension: new icons
adding some headers
fix radius bug and add new imperial sketch grid cascading...
small fix
fixes for windows
Merge branch 'refs/heads/j-downsett-drawing'
adding toggle and clear to context, view menu
Merge branch 'refs/heads/tanderson-rev-partdimension'
additional places for measurement commands
Arch: Further work on the IFC exporter, now supports windows and bldg hierarchy